Sorting Gui Program

Jennifer Bell

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

}

private void button1_Click(object sender, EventArgs e)

{

}

private void button2_Click(object sender, EventArgs e)

{

}

}

}

Im trying to create a program that sorts 3 numbers in ascending and descending order by the press of either button. I added the 2 buttons but as of right now they have no value to them. The 3 numbers need to be inserted into a text box. Ex) text box 1, text box 2, text box 3. I am stuck any guidance would be great. Please and thank you!

4 Replies

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Jennifer Bell14y ago
Okay I see what you did. Thanks!
0
Vulpes14y ago
You've missed out this chunk of code (converted to use double) at the beginning of the SortNumbers method:

double number1;

if (!double.TryParse(textBox1.Text, out number1))
{
MessageBox.Show("The first text box doesn't contain a valid number. Please amend.");
textBox1.Focus();
return;
}

double number2;

if (!double.TryParse(textBox2.Text, out number2))
{
MessageBox.Show("The second text box doesn't contain a valid number. Please amend.");
textBox2.Focus();
return;
}

int number3;

if (!double.TryParse(textBox3.Text, out number3))
{
MessageBox.Show("The third text box doesn't contain a valid number. Please amend.");
textBox3.Focus();
return;
}

If I were you, I'd leave the 'MessageBox' code in to check for input errors. If you don't and someone presses button1 when one of the textboxes is still empty, your application will end with an exception.
0
Jennifer Bell14y ago
using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace

{

    public partial class Form1 : Form

    {

        public Form1()

        {


InitializeComponent();

        }

        private void
button1_Click(object sender, EventArgs e)

        {


SortNumbers(false);

        }

        private void
button2_Click(object sender, EventArgs e)

        {


SortNumbers(true);

        }

        private void
SortNumbers(bool reverse)

        {

            double[] numbers = { number1, number2, number3 };

            Array.Sort(numbers);

            if (reverse) Array.Reverse(numbers);


textBox1.Text = numbers[0].ToString();


textBox2.Text = numbers[1].ToString();


textBox3.Text = numbers[2].ToString();

        }

    }

}

I changed the numbers to be double in this program. I then took out the message boxes so I can use decimal numbers. After doing this I now get an error for numbers 1-3 saying does not exist in the current context.
0
Vulpes14y ago
Try this:

public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void button1_Click(object sender, EventArgs e)
{
SortNumbers(false);
}

private void button2_Click(object sender, EventArgs e)
{
SortNumbers(true);
}

// add this method
private void SortNumbers(bool reverse)
{
int number1;

if (!int.TryParse(textBox1.Text, out number1))
{
MessageBox.Show("The first text box doesn't contain a valid integer. Please amend.");
textBox1.Focus();
return;
}

int number2;

if (!int.TryParse(textBox2.Text, out number2))
{
MessageBox.Show("The second text box doesn't contain a valid integer. Please amend.");
textBox2.Focus();
return;
}

int number3;

if (!int.TryParse(textBox3.Text, out number3))
{
MessageBox.Show("The third text box doesn't contain a valid integer. Please amend.");
textBox3.Focus();
return;
}

int[] numbers = { number1, number2, number3 };
Array.Sort(numbers);
if (reverse) Array.Reverse(numbers);
textBox1.Text = numbers[0].ToString();
textBox2.Text = numbers[1].ToString();
textBox3.Text = numbers[2].ToString();
}
}
0